Exam 1 Review KEY
... 23.) What is a polyribosome? Why would a cell contain polyribosomes? Many ribosomes on one mRNA. The cell is trying to produce many of one kind of protein. 24.) By coupling a reaction, an ___exergonic_______ reaction allows an ___endergonic______ reaction to become spontaneous. This is caused by th ...
... 23.) What is a polyribosome? Why would a cell contain polyribosomes? Many ribosomes on one mRNA. The cell is trying to produce many of one kind of protein. 24.) By coupling a reaction, an ___exergonic_______ reaction allows an ___endergonic______ reaction to become spontaneous. This is caused by th ...
Slide 1
... catalysts because they _____________ reactions e.g. respiration in the mitochondria -Can change one molecule into another, break down large molecules into smaller ones or build small molecules into larger ones ...
... catalysts because they _____________ reactions e.g. respiration in the mitochondria -Can change one molecule into another, break down large molecules into smaller ones or build small molecules into larger ones ...
Cell Metabolism
... it must be resynthesized from its amino acids it frees itself from the product and is ready to be reused it must be transported from outside of the cell its shape is changed into an active form its active site closes up and cannot bind to more substrate ...
... it must be resynthesized from its amino acids it frees itself from the product and is ready to be reused it must be transported from outside of the cell its shape is changed into an active form its active site closes up and cannot bind to more substrate ...
protein/power point
... Five functions of proteins include: • Controlling the rate of reactions (enzymes). • Regulating cell processes (enzymes). • Forming bones and muscles. • Transporting substances into or out of cells. • Helping to fight disease. ...
... Five functions of proteins include: • Controlling the rate of reactions (enzymes). • Regulating cell processes (enzymes). • Forming bones and muscles. • Transporting substances into or out of cells. • Helping to fight disease. ...
002 Chapter 2
... B. taking lactase enzyme tablets when consuming lactose products. C. taking any enzyme tablets when consuming dairy products. D. consuming lactose in tablet form. E. Both taking lactase enzyme and avoiding all dairy products would be correct. 33. Which statement is NOT true about the effects of vari ...
... B. taking lactase enzyme tablets when consuming lactose products. C. taking any enzyme tablets when consuming dairy products. D. consuming lactose in tablet form. E. Both taking lactase enzyme and avoiding all dairy products would be correct. 33. Which statement is NOT true about the effects of vari ...
exam two_study guide
... What is oxidative phosphorylation and photophosphorylation, how are they similar/different? What is the ATP ase? Dehydrogenase enzymes? Know what takes place in the light reactions and the calvin cycle (in as much detail as presented in class) as well as the three phases of cellular respiratio ...
... What is oxidative phosphorylation and photophosphorylation, how are they similar/different? What is the ATP ase? Dehydrogenase enzymes? Know what takes place in the light reactions and the calvin cycle (in as much detail as presented in class) as well as the three phases of cellular respiratio ...
Odormute Breakdown Industrial Digester
... harmful chemicals and continue to remediate new materials added to the system. These same enzymes occur naturally in the environment keeping plant, animal and human waste from over-running us. Enzymes are derived from all living organisms and are harmless to humans, animals and marine life. Enzymes ...
... harmful chemicals and continue to remediate new materials added to the system. These same enzymes occur naturally in the environment keeping plant, animal and human waste from over-running us. Enzymes are derived from all living organisms and are harmless to humans, animals and marine life. Enzymes ...
Q1. Babies find it difficult to digest proteins in their food. Baby food
... Iodine solution is a pale golden brown, transparent solution. Starch reacts with iodine to form a ...
... Iodine solution is a pale golden brown, transparent solution. Starch reacts with iodine to form a ...
Enzymes: Introduction Enzymes are proteins. – (ribozymes: catalytic
... (activated only where blood needs to clot, works only on very specific target protein) •substrate specificity of proteases-another example, chymotrypsin: –cleaves on carboxyl side of aromatic and hydrophobic amino acid ...
... (activated only where blood needs to clot, works only on very specific target protein) •substrate specificity of proteases-another example, chymotrypsin: –cleaves on carboxyl side of aromatic and hydrophobic amino acid ...
Enzymes How Do Enzymes Work?
... Enzymes bind the substrate (reactants) in the active site. This is a cleft that is lined with an array of polar, non-polar, and charged amino acids arranged in such a way as to interact favorably, and selectively, with the substrate. ...
... Enzymes bind the substrate (reactants) in the active site. This is a cleft that is lined with an array of polar, non-polar, and charged amino acids arranged in such a way as to interact favorably, and selectively, with the substrate. ...
Chemistry of Life Notes (my notes).
... 2. Monomers = nucleotides 1. Sugar – ribose or deoxyribose 2. Phosphate group 3. Nitrogen Base – A, T, G, C, and U ...
... 2. Monomers = nucleotides 1. Sugar – ribose or deoxyribose 2. Phosphate group 3. Nitrogen Base – A, T, G, C, and U ...
The nature of matter
... The process of digestion (as well as thousands of other cellular functions) requires that macromolecules be broken down at the molecular level. This process, called depolymerization, requires specialized enzymes to carry out ...
... The process of digestion (as well as thousands of other cellular functions) requires that macromolecules be broken down at the molecular level. This process, called depolymerization, requires specialized enzymes to carry out ...
word
... Explain differences between prokaryotic and eukaryotic cells Explain characteristics of prokaryotic and eukaryotic cells What structures are found in both prokaryotics and eukaryotic cells What is the endosymbiotic theory? What are some of the model organisms and to what properties of the cell biolo ...
... Explain differences between prokaryotic and eukaryotic cells Explain characteristics of prokaryotic and eukaryotic cells What structures are found in both prokaryotics and eukaryotic cells What is the endosymbiotic theory? What are some of the model organisms and to what properties of the cell biolo ...
Enzymes
... Do not enter active site, but bind to another part of the enzyme, causing the enzyme & active site to change shape. Usually reversible, depending on concentration of inhibitor & substrate. EXAMPLE: You may know that compounds containing heavy metals such as lead, mercury, copper or silver are poison ...
... Do not enter active site, but bind to another part of the enzyme, causing the enzyme & active site to change shape. Usually reversible, depending on concentration of inhibitor & substrate. EXAMPLE: You may know that compounds containing heavy metals such as lead, mercury, copper or silver are poison ...
General theory of enzyme action, by Leonor Michaelis and Maud
... • Reversible inhibitor: a substance that binds to an enzyme to inhibit it, but can be released – competitive inhibitor: binds to the active (catalytic) site and blocks access to it by substrate – noncompetitive inhibitor: binds to a site other than the active site; inhibits the enzyme by changing it ...
... • Reversible inhibitor: a substance that binds to an enzyme to inhibit it, but can be released – competitive inhibitor: binds to the active (catalytic) site and blocks access to it by substrate – noncompetitive inhibitor: binds to a site other than the active site; inhibits the enzyme by changing it ...
Midterm 1 - Version A
... The common domain is likely non-functional in these enzymes The two enzymes could have evolved from a common protein The common domain will most likely be mutated in one of the proteins ...
... The common domain is likely non-functional in these enzymes The two enzymes could have evolved from a common protein The common domain will most likely be mutated in one of the proteins ...
Biochemistry…
... catalyst is a substance that decreases the activation energy for a reaction and increases the rate of reaction Enzymes ...
... catalyst is a substance that decreases the activation energy for a reaction and increases the rate of reaction Enzymes ...
OCR A and AS Level Biology A Delivery Guide
... • digestive enzymes that allow laboratory practical activity to be carried out, • enzymes from organisms that live at extremes of temperature or pH and their possible use in industrial applications, • enzymes that work more quickly in the presence of a cofactor, • examples of enzymes that are in ...
... • digestive enzymes that allow laboratory practical activity to be carried out, • enzymes from organisms that live at extremes of temperature or pH and their possible use in industrial applications, • enzymes that work more quickly in the presence of a cofactor, • examples of enzymes that are in ...
Foundations in Microbiology
... molecules forming smaller molecules; releases energy Anabolism – biosynthesis; process that forms larger macromolecules from smaller molecules; requires energy input ...
... molecules forming smaller molecules; releases energy Anabolism – biosynthesis; process that forms larger macromolecules from smaller molecules; requires energy input ...
Enzyme
Enzymes /ˈɛnzaɪmz/ are macromolecular biological catalysts. Enzymes accelerate, or catalyze, chemical reactions. The molecules at the beginning of the process are called substrates and the enzyme converts these into different molecules, called products. Almost all metabolic processes in the cell need enzymes in order to occur at rates fast enough to sustain life. The set of enzymes made in a cell determines which metabolic pathways occur in that cell. The study of enzymes is called enzymology.Enzymes are known to catalyze more than 5,000 biochemical reaction types. Most enzymes are proteins, although a few are catalytic RNA molecules. Enzymes' specificity comes from their unique three-dimensional structures.Like all catalysts, enzymes increase the rate of a reaction by lowering its activation energy. Some enzymes can make their conversion of substrate to product occur many millions of times faster. An extreme example is orotidine 5'-phosphate decarboxylase, which allows a reaction that would otherwise take millions of years to occur in milliseconds. Chemically, enzymes are like any catalyst and are not consumed in chemical reactions, nor do they alter the equilibrium of a reaction. Enzymes differ from most other catalysts by being much more specific. Enzyme activity can be affected by other molecules: inhibitors are molecules that decrease enzyme activity, and activators are molecules that increase activity. Many drugs and poisons are enzyme inhibitors. An enzyme's activity decreases markedly outside its optimal temperature and pH.Some enzymes are used commercially, for example, in the synthesis of antibiotics. Some household products use enzymes to speed up chemical reactions: enzymes in biological washing powders break down protein, starch or fat stains on clothes, and enzymes in meat tenderizer break down proteins into smaller molecules, making the meat easier to chew.